The company's latest cell phone has no 'rival/rivals'. [=the company's newest cell phone is much better than all others available]
The company's paper is the 'rival' of any in the world. [=it is as good as any paper in the world]
He told a 'rival' version of the story. [=a version that disagrees with another version]
(..) All her enemies. Including Olenna Tyrell. I'm a Tarly. That name means something. We're not oathbreakers. We're not schemers. We don't stab our rivals in the back or cut their throats at weddings. I swore an oath to House Tyrell. You swore an oath to the crown as well, Lord Tarly. I've known Olenna (..)2017 TvShow: Game of Thrones Title: Stormborn Season: 7 Episode 2